<template>
  <div class="son">
    我是子组件son

    <button @click="btnClick">传递信息son2</button>
  </div>
</template>
<script>
export default {
  methods: {
    btnClick() {
      this.$bus.$emit('atob', 'hello')
    }
  }
}
</script>
<style lang="scss" scoped>
.son {
  width: 300px;
  height: 300px;
  border: 10px solid red;
}
</style>
